* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
-#include <config.h>
+#include "config.h"
+
+#include <glib.h>
#include <stdlib.h>
#include <string.h>
-#include <glib.h>
+
#include <libsigrok/libsigrok.h>
#include "libsigrok-internal.h"
#define LOG_PREFIX "input/csv"
+#define CHUNK_SIZE (4 * 1024 * 1024)
+
/*
* The CSV input module has the following options:
*
/* Format sample data is stored in single column mode. */
int format;
- /* Size of the sample buffer. */
- size_t sample_buffer_size;
+ size_t sample_unit_size; /**!< Byte count for a single sample. */
+ uint8_t *sample_buffer; /**!< Buffer for a single sample. */
- /* Buffer to store sample data. */
- uint8_t *sample_buffer;
+ uint8_t *datafeed_buffer; /**!< Queue for datafeed submission. */
+ size_t datafeed_buf_size;
+ size_t datafeed_buf_fill;
/* Current line number. */
size_t line_number;
+
+ /* List of previously created sigrok channels. */
+ GSList *prev_sr_channels;
};
static void strip_comment(char *buf, const GString *prefix)
}
/* Clear buffer in order to set bits only. */
- memset(inc->sample_buffer, 0, (inc->num_channels + 7) >> 3);
+ memset(inc->sample_buffer, 0, inc->sample_unit_size);
i = inc->first_channel;
}
/* Clear buffer in order to set bits only. */
- memset(inc->sample_buffer, 0, (inc->num_channels + 7) >> 3);
+ memset(inc->sample_buffer, 0, inc->sample_unit_size);
/* Calculate the position of the first hexadecimal digit. */
i = inc->first_channel / 4;
}
/* Clear buffer in order to set bits only. */
- memset(inc->sample_buffer, 0, (inc->num_channels + 7) >> 3);
+ memset(inc->sample_buffer, 0, inc->sample_unit_size);
/* Calculate the position of the first octal digit. */
i = inc->first_channel / 3;
char *column;
/* Clear buffer in order to set bits only. */
- memset(inc->sample_buffer, 0, (inc->num_channels + 7) >> 3);
+ memset(inc->sample_buffer, 0, inc->sample_unit_size);
for (i = 0; i < inc->num_channels; i++) {
column = columns[i];
return res;
}
-static int send_samples(const struct sr_dev_inst *sdi, uint8_t *buffer,
- gsize buffer_size, gsize count)
+static int flush_samples(const struct sr_input *in)
{
+ struct context *inc;
struct sr_datafeed_packet packet;
struct sr_datafeed_logic logic;
- int res;
- gsize i;
+ int rc;
+
+ inc = in->priv;
+ if (!inc->datafeed_buf_fill)
+ return SR_OK;
+ memset(&packet, 0, sizeof(packet));
+ memset(&logic, 0, sizeof(logic));
packet.type = SR_DF_LOGIC;
packet.payload = &logic;
- logic.unitsize = buffer_size;
- logic.length = buffer_size;
- logic.data = buffer;
-
- for (i = 0; i < count; i++) {
- res = sr_session_send(sdi, &packet);
- if (res != SR_OK)
- return res;
- }
+ logic.unitsize = inc->sample_unit_size;
+ logic.length = inc->datafeed_buf_fill;
+ logic.data = inc->datafeed_buffer;
+ rc = sr_session_send(in->sdi, &packet);
+ if (rc != SR_OK)
+ return rc;
+
+ inc->datafeed_buf_fill = 0;
+ return SR_OK;
+}
+
+static int queue_samples(const struct sr_input *in)
+{
+ struct context *inc;
+ int rc;
+
+ inc = in->priv;
+
+ inc->datafeed_buf_fill += inc->sample_unit_size;
+ if (inc->datafeed_buf_fill == inc->datafeed_buf_size) {
+ rc = flush_samples(in);
+ if (rc != SR_OK)
+ return rc;
+ }
+ inc->sample_buffer = &inc->datafeed_buffer[inc->datafeed_buf_fill];
return SR_OK;
}
return SR_OK;
}
+/*
+ * Check the channel list for consistency across file re-import. See
+ * the VCD input module for more details and motivation.
+ */
+
+static void keep_header_for_reread(const struct sr_input *in)
+{
+ struct context *inc;
+
+ inc = in->priv;
+ g_slist_free_full(inc->prev_sr_channels, sr_channel_free_cb);
+ inc->prev_sr_channels = in->sdi->channels;
+ in->sdi->channels = NULL;
+}
+
+static int check_header_in_reread(const struct sr_input *in)
+{
+ struct context *inc;
+
+ if (!in)
+ return FALSE;
+ inc = in->priv;
+ if (!inc)
+ return FALSE;
+ if (!inc->prev_sr_channels)
+ return TRUE;
+
+ if (sr_channel_lists_differ(inc->prev_sr_channels, in->sdi->channels)) {
+ sr_err("Channel list change not supported for file re-read.");
+ return FALSE;
+ }
+ g_slist_free_full(in->sdi->channels, sr_channel_free_cb);
+ in->sdi->channels = inc->prev_sr_channels;
+ inc->prev_sr_channels = NULL;
+
+ return TRUE;
+}
+
static const char *delim_set = "\r\n";
static const char *get_line_termination(GString *buf)
sr_channel_new(in->sdi, i, SR_CHANNEL_LOGIC, TRUE, channel_name->str);
}
g_string_free(channel_name, TRUE);
+ if (!check_header_in_reread(in)) {
+ ret = SR_ERR_DATA;
+ goto out;
+ }
/*
- * Calculate the minimum buffer size to store the sample data of the
- * channels.
+ * Calculate the minimum buffer size to store the set of samples
+ * of all channels (unit size). Determine a larger buffer size
+ * for datafeed submission that is a multiple of the unit size.
+ * Allocate the larger buffer, and have the "sample buffer" point
+ * to a location within that large buffer.
*/
- inc->sample_buffer_size = (inc->num_channels + 7) >> 3;
- inc->sample_buffer = g_malloc(inc->sample_buffer_size);
+ inc->sample_unit_size = (inc->num_channels + 7) / 8;
+ inc->datafeed_buf_size = CHUNK_SIZE;
+ inc->datafeed_buf_size *= inc->sample_unit_size;
+ inc->datafeed_buffer = g_malloc(inc->datafeed_buf_size);
+ inc->datafeed_buf_fill = 0;
+ inc->sample_buffer = &inc->datafeed_buffer[inc->datafeed_buf_fill];
out:
if (columns)
columns = parse_line(line, inc, max_columns);
if (!columns) {
sr_err("Error while parsing line %zu.", inc->line_number);
+ g_strfreev(lines);
return SR_ERR;
}
num_columns = g_strv_length(columns);
sr_err("Column %u in line %zu is out of bounds.",
inc->first_column, inc->line_number);
g_strfreev(columns);
+ g_strfreev(lines);
return SR_ERR;
}
/*
sr_err("Not enough columns for desired number of channels in line %zu.",
inc->line_number);
g_strfreev(columns);
+ g_strfreev(lines);
return SR_ERR;
}
ret = parse_single_column(columns[0], inc);
if (ret != SR_OK) {
g_strfreev(columns);
+ g_strfreev(lines);
return SR_ERR;
}
/* Send sample data to the session bus. */
- ret = send_samples(in->sdi, inc->sample_buffer,
- inc->sample_buffer_size, 1);
+ ret = queue_samples(in);
if (ret != SR_OK) {
sr_err("Sending samples failed.");
+ g_strfreev(columns);
+ g_strfreev(lines);
return SR_ERR;
}
+
g_strfreev(columns);
}
g_strfreev(lines);
ret = process_buffer(in, TRUE);
else
ret = SR_OK;
+ if (ret != SR_OK)
+ return ret;
+
+ ret = flush_samples(in);
+ if (ret != SR_OK)
+ return ret;
inc = in->priv;
if (inc->started)
{
struct context *inc;
- inc = in->priv;
-
- if (inc->delimiter)
- g_string_free(inc->delimiter, TRUE);
+ keep_header_for_reread(in);
- if (inc->comment)
- g_string_free(inc->comment, TRUE);
+ inc = in->priv;
g_free(inc->termination);
- g_free(inc->sample_buffer);
+ inc->termination = NULL;
+ g_free(inc->datafeed_buffer);
+ inc->datafeed_buffer = NULL;
}
static int reset(struct sr_input *in)
}
static struct sr_option options[] = {
- { "single-column", "Single column", "Enable/specify single column", NULL, NULL },
- { "numchannels", "Max channels", "Number of channels", NULL, NULL },
- { "delimiter", "Delimiter", "Column delimiter", NULL, NULL },
- { "format", "Format", "Numeric format", NULL, NULL },
- { "comment", "Comment", "Comment prefix character", NULL, NULL },
- { "samplerate", "Samplerate", "Samplerate used during capture", NULL, NULL },
- { "first-channel", "First channel", "Column number of first channel", NULL, NULL },
- { "header", "Header", "Treat first line as header with channel names", NULL, NULL },
- { "startline", "Start line", "Line number at which to start processing samples", NULL, NULL },
+ { "single-column", "Single column", "Enable single-column mode, using the specified column (>= 1); 0: multi-col. mode", NULL, NULL },
+ { "numchannels", "Number of logic channels", "The number of (logic) channels (single-col. mode: number of bits beginning at 'first channel', LSB-first)", NULL, NULL },
+ { "delimiter", "Column delimiter", "The column delimiter (>= 1 characters)", NULL, NULL },
+ { "format", "Data format (single-col. mode)", "The numeric format of the data (single-col. mode): bin, hex, oct", NULL, NULL },
+ { "comment", "Comment character(s)", "The comment prefix character(s)", NULL, NULL },
+ { "samplerate", "Samplerate (Hz)", "The sample rate (used during capture) in Hz", NULL, NULL },
+ { "first-channel", "First channel", "The column number of the first channel (multi-col. mode); bit position for the first channel (single-col. mode)", NULL, NULL },
+ { "header", "Interpret first line as header (multi-col. mode)", "Treat the first line as header with channel names (multi-col. mode)", NULL, NULL },
+ { "startline", "Start line", "The line number at which to start processing samples (>= 1)", NULL, NULL },
ALL_ZERO
};
static const struct sr_option *get_options(void)
{
+ GSList *l;
+
if (!options[0].def) {
options[0].def = g_variant_ref_sink(g_variant_new_int32(0));
options[1].def = g_variant_ref_sink(g_variant_new_int32(0));
options[2].def = g_variant_ref_sink(g_variant_new_string(","));
options[3].def = g_variant_ref_sink(g_variant_new_string("bin"));
+ l = NULL;
+ l = g_slist_append(l, g_variant_ref_sink(g_variant_new_string("bin")));
+ l = g_slist_append(l, g_variant_ref_sink(g_variant_new_string("hex")));
+ l = g_slist_append(l, g_variant_ref_sink(g_variant_new_string("oct")));
+ options[3].values = l;
options[4].def = g_variant_ref_sink(g_variant_new_string(";"));
options[5].def = g_variant_ref_sink(g_variant_new_uint64(0));
options[6].def = g_variant_ref_sink(g_variant_new_int32(0));
projects / libsigrok.git / blobdiff